42551365794 has 32 divisors (see below), whose sum is σ = 97266545280. Its totient is φ = 12156748032.

The previous prime is 42551365783. The next prime is 42551365799. The reversal of 42551365794 is 49756315524.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42551365799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036972 + ... + 1077224.

It is an arithmetic number, because the mean of its divisors is an integer number (3039579540).

Almost surely, 2^42551365794 is an apocalyptic number.

42551365794 is an abundant number, since it is smaller than the sum of its proper divisors (54715179486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42551365794 is a wasteful number, since it uses less digits than its factorization.

42551365794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65434.

The product of its digits is 4536000, while the sum is 51.

The spelling of 42551365794 in words is "forty-two billion, five hundred fifty-one million, three hundred sixty-five thousand, seven hundred ninety-four".